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Mesbahi, Fatemeh, Mohajjel, Mohammad, Oberhänsli, Roland, Moazzen, Mohsen. (1396). The mafic rocks along the North Tabriz Fault, possible remnants of Neo-Tethys oceanic crust in NW Iran. , 7(2), 301-311. doi: 10.22059/geope.2017.232747.648323
Fatemeh Mesbahi; Mohammad Mohajjel; Roland Oberhänsli; Mohsen Moazzen. "The mafic rocks along the North Tabriz Fault, possible remnants of Neo-Tethys oceanic crust in NW Iran". , 7, 2, 1396, 301-311. doi: 10.22059/geope.2017.232747.648323
Mesbahi, Fatemeh, Mohajjel, Mohammad, Oberhänsli, Roland, Moazzen, Mohsen. (1396). 'The mafic rocks along the North Tabriz Fault, possible remnants of Neo-Tethys oceanic crust in NW Iran', , 7(2), pp. 301-311. doi: 10.22059/geope.2017.232747.648323
Mesbahi, Fatemeh, Mohajjel, Mohammad, Oberhänsli, Roland, Moazzen, Mohsen. The mafic rocks along the North Tabriz Fault, possible remnants of Neo-Tethys oceanic crust in NW Iran. , 1396; 7(2): 301-311. doi: 10.22059/geope.2017.232747.648323

The mafic rocks along the North Tabriz Fault, possible remnants of Neo-Tethys oceanic crust in NW Iran

Geopersia
مقاله 9، دوره 7، شماره 2 - شماره پیاپی 22287825، مهر 2017، صفحه 301-311    اصل مقاله (1.28 M)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22059/geope.2017.232747.648323
نویسندگان
Fatemeh Mesbahi* 1؛ Mohammad Mohajjel1؛ Roland Oberhänsli2؛ Mohsen Moazzen3
1Department of geology, Tarbiat Modares University, Tehran, Islamic Republic of Iran
2Institute of Earth and Environmental Science, University of Potsdam, Potsdam Germany
3Department of Earth Sciences, Faculty of Natural Sciences, University of Tabriz, Tabriz, Islamic Republic of Iran
چکیده
The North Tabriz Fault is seismologically an active fault with current right lateral strike-slip movements. Restricted mafic to intermediate Late Cretaceous igneous rocks are exposed along the North Tabriz Fault. Whole rock samples and clinopyroxene phenocrysts geochemistry were studied in order to characterize the petrogenesis of these mafic rocks and their possible relation to an oceanic crust. The results indicate a tholeiitic parental magma that formed in an evolved mid- ocean ridge tectonic setting similar to the Iceland mid-Atlantic ridge basalts. The ocean floor basalt characteristics give evidence of an oceanic crust along the North Tabriz Fault. Therefore, the trend of the North Tabriz Fault more likely marks a suture zone related to the closure of a branch of the Neo-Tethys Ocean in the NW Iran. This fault, in addition to the Caucasus and Zagros suture zones, compensates an important part of the convergence between the Arabian and Eurasian plates resulting from the Red Sea divergence. It is concluded that the North Tabriz Fault appears to be possible southeastern continuation of the North Anatolian suture zone.
کلیدواژه‌ها
North Tabriz Fault؛ mafic rocks؛ Tholeiite؛ Late Cretaceous
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